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The Higgs Portal to Cosmology

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arxiv 2104.03342 v7 pith:NXBCQ7DK submitted 2021-04-07 hep-ph astro-ph.CO

The Higgs Portal to Cosmology

classification hep-ph astro-ph.CO
keywords higgscouplingsportalcosmologicalinteractingaspectsavenuebeyond
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The discovery of the Higgs boson has opened a new avenue for exploring physics beyond the Standard Model. In this review, we discuss cosmological aspects of the simplest Higgs couplings to the hidden sector, known as the Higgs portal. We focus on implications of such couplings for inflation, vacuum stability and dark matter, with the latter including both the traditional weakly interacting massive particles as well as feebly interacting scalars. The cosmological impact of the Higgs portal can be important even for tiny values of the couplings.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Exploring non-equilibrium effects in sequential freeze-in

    hep-ph 2026-04 unverdicted novelty 6.0

    In a two-scalar dark sector, non-equilibrium phase-space evolution during sequential freeze-in alters the dark matter relic abundance by up to an order of magnitude relative to the standard number-density treatment.

  2. Gravitational Waves from Matter Perturbations of Spectator Scalar Fields

    hep-ph 2026-04 unverdicted novelty 5.0

    A spectator scalar field with strong portal coupling to the inflaton sources a stochastic gravitational wave background reaching Ω_GW h² ∼ 10^{-11} at frequencies 10^7-10^8 Hz for benchmark parameters σ/λ ≃ 10^4 and T...